ORIGINAL: bigedmustafa
I've got an old .46 FX that I've been flying for six seasons now, and it was well used when I got it. I have a Magnum XLS .52A two-stroke that I've had for five seasons; it has hundreds of flights on it and it still has a nice, tight pinch and the top of the stroke.
Maybe you're running your engines too rich and your piston liners aren't getting hot enough to expand properly. That would explain any broken connecting rods and/or pins.
Yeah, I agree with that too rich idea.
I've been flying for 3 1/2 years, all of the engines I have bought are still being run with original parts. Except an Aviastar 46 that I have tried every trick in the book to make it run, but the carb on it is useless(anybody know one that will fit?). I really haven't been able to fly as often as many people but this year I am ready. I might find out the durability of the engines I have before summer begins. Some of my engines have been in more than one plane.-BW